"tastant" meaning in English

{
  "forms": [
    {
      "form": "tastants",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tastant (plural tastants)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
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      ],
      "examples": [
        {
          "ref": "2012, Trevor H. Grenby, Advances in Sweeteners, page 4:",
          "text": "Early structure-taste theories attempted to identify certain common structural features of tastants and to attribute a specific taste to these.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Any substance that stimulates the sense of taste."
      ],
      "id": "en-tastant-en-noun-UM0uxOQ8",
      "links": [
        [
          "taste",
          "taste"
        ]
      ]
    }
  ],
  "word": "tastant"
}

{
  "forms": [
    {
      "form": "tastants",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tastant (plural tastants)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Entries with translation boxes",
        "Pages with 2 entries"
      ],
      "examples": [
        {
          "ref": "2012, Trevor H. Grenby, Advances in Sweeteners, page 4:",
          "text": "Early structure-taste theories attempted to identify certain common structural features of tastants and to attribute a specific taste to these.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Any substance that stimulates the sense of taste."
      ],
      "links": [
        [
          "taste",
          "taste"
        ]
      ]
    }
  ],
  "word": "tastant"
}